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(No Model) 4 Sheets-Sheet 1. E. WESTON.

SUSPENDING AND CIRCUIT CONTROLLING MECHANISM FOR ARC LAMPS. No. 269,758. Patented Deo.26, 1882.

(No Medal.) I 4 Sheets-Sheet 2.

E. WESTON.

SUSPENDING AND 01301111" GONT'ROLLING' MECHANISM FOR ARC LAMPS.

No. 269,758. Patented 1300.26, 1882.

(No Model.) 4 Sheets-Shee.t 3.

E. WESTON.

SUSPENDING AND CIRCUIT CONTROLLING MECHANISM FOB/ARC LAMPS. No. 269,758. Patented Dec. 26, 1882.

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(No Model.) 4'8heets -Sheet 4.

E. WEST-ON.

SUSPBNDING AND CIRCUIT CONTROLLING MECHANISM FOR ARC LAMPS. No.269,758. Patented Dec. 26, 1882.

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U ITED STATES I PATENT OFFICE.

EDlVARDWVESTON, OF NElVARK, NEVV JERSEY, ASSIGNOR TO THE UNITED STATES ELECTRIC LIGHTING COMPANY, OB NEW YORK, N. Y.

SUSPENDING AND CIRCUIT-CONTROLLING MECHANlSM FOR ARC-LAMPS.

SPECIFICATION forming part of Letters Patent No. 269,758, dated December 26, 183?.

Application filed June 7, 1852.

To all whom it may concern Be it known that I, EDWARD Wns'ro-N, of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Suspending and Gin.

cuit-Oontrolling Mechanism for Electric-Arc Lamps, of which the following is a specification, reference being bad to the drawings accompanying and forming a part of the same.

My invention relates to devices to be used for hangingelectricarclamps; and it involves a novel construction and arrangement of those parts of the said devices that are designed for interrupting or diverting the electric current, and other features of novelty, which will be more fully hereinafter set forth.

In the drawings hereto annexed, Figure l is a view in elevation of my improved suspending device with the upper portion of an electric lamp attached thereto and shown in part section. Fig. 2 is a plan view of a board or plate with the several devices comprised by my invention fixed thereto. Fig. 3 is a diagram illustrating the direction and nature of the circuits employed in the apparatus. Fig. 4 is an end view of the devices illustrated in Figs. 1 and 2. Fig. 5 is a vertical section taken on line as m of Fig. 1. Fig. 6 is a detail of mechanism employed in the construction of a manual switch, and Fig. 7 a section on line 3 y of Fig. 2.

Similar letters of reference indicate corresponding parts.

On a plate, A, of insulating material are fixed two metal plates, B O, on which are cars or lugs a and short bars I), so placed that a lamp provided with hooksD E may be readily suspended from them. To opposite corners of plate A arefixed binding-posts d e, and in the space between the two plates B G are secured manual and automatic cut-outs or switches.

The former consists of a cylinder, F, of wood, vulcanized fiber, or other insulating material, to the ends of which are secured metal heads .45 ff,havingjournals pg, by means of which the (No model.)

pin are fixed a. triangular plate, H, having stops or pins h It and insulated knob H. A flat spring, P, is set in the plate G, which is bent upward by the toe y when the latter is turned from side to side.

J is a plate of metal let into a recess in the cylinder F, and K K are ears extending from the headsff. Metal springs S S, whose ends are clamped to the plate A by bolts 5, bear upon the surface of the cylinder F, the plate J, or the ears K K, according to the position in which the cylinder is held.

The automatic cut-out, which is also attached to the plate, consists of an electro-inagnet, L, a metal frame, L, and a pivoted armature, M. Around the core of the magnet pass two coils, onethe innerbeing composed of large-sized copper wire, included in the main or are circuit of the lamp, the other or outer coil being in a circuit which is completed between the opposite terminals of thelamponly when the armature M is in contact with the frame L. This coil is wound only a few times about the core, so that by itself it will not magnetize the core snliiciently to raise the armature M. By the size of the wire employed, or by the introduction of artificial resistance, the total resistance of this shunt or derived circuit should be just equal to that which passes through the lamp and when the car bons are in contact.

scribed devices will now be explained.

The binding-posts (I e are connected direct- 1y to the bolts that clamp to the plate A the springs S S by wires R R. The plates or standards G G are electrically connected to the suspending-plates B O by wires T T. It, therefore, the cylinder F be turned so that the springs S S rest on the plate J, a short circuit will be formed between the binding-posts cl 0, and practically no current will pass to the lamp. It, on the contrary, cylinder F be turned to bring springs S S in contact with the ears K the journal 9, plate G, and wire T to the suspending-plate O, and by means of the journal g, plate G. and wire T to plate 13, so that alamp hung from theplates B U,as above described, will be included in the circuit. The

K, the circuit will be completed by means of The objects and operation of the above-deturning of the cylinder F should be sudden and positive, for which reason the devices above described are employed. The plate H, being fixed to the pin 1), is moved by turning the knob H. By this movement the toe g is forced by one of the pins, as h, over toward the stop-pin c. As soon as the toe passes be- \fond a vertical position the force of spring 1 drives it with considerable force down onto stop h, shifting in so doing the springs S S from plate J onto the ears K K. The action is the same when the knob is turned in a reverse direction, as will be seen by reference to Fig. 6. The wire T, after leaving the plate G, is wound around the core of the electro-magnet L,and then attached to plate B. The wire N is united to wire T, then carried over the first or main coil, and then connected to the armature M. The frame L is electrically connected with wire R by a wire, v.

Theoperation otthisdeviceisfollowsz When a current is flowing through the lamp the armature M is attracted by the magnet L, the latter being energized by the current flowing in wire T. if for any cause the arc should be interrupted or the lamp become inoperative by accident, so that the current will no longer flow through it, the armature M falls and completes a circuit around the lamp through the armature M, standard L, and wires c N. This circuit, though around the core of magnet L, is notsufticient of itself to raise or vibrate the armature M. Suppose, however, the interruption of the are is only momentary, as soon as the carbons come again in contact the whole current divides between the are and the shunt circuits, and this is sufficient to raise armature M and leave the only path for the circuit through the lamp.

When a number of lamps are run in series, and each provided with a cut-out device such as described, an interruption of the circuit at any point causes all the cut-outs to operate, though a complete circuit is still maintained. If the interruption take place outside the lamps, they will all be brought into circuit again as soon as their carbons come into contact. It the interruption occurs in one of the lamps, all the rest that have been cut out will he brought into circuit by the contact of their carbons, while the defective lamp remains cut out of circuit. In either case the extinguishment of the lamps will last so short a time as to be scarcely noticeable.

By the above-described construction and arrangement ot' the several parts of the apparatus many advantages are secured. The lamp and circuit controlling devices being entirely independent of one another, perfect safety is insured to those handling the lamps, as all parts of the same can he cut out of the circuit, and in case of accident to either cut-out the trouble and delay of repair required where the cut-out is within the lamp-case is avoided.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A deviceforsuspendingelectric-arclamps, consisting of an insulating plate or base havingattached thereto suspendin g-hooks forming the terminals of an electric circuit, a manual switch, and electromagnetic out-out, and circuit-connections, substantially as hereinbet'orc described.

2. The combination, with the cylinderF,l1aV- ing contact-plates and metallic journals,one of which is formed or provided with a toe, g, of plates G G, pins or stops thereon, spring P, spindle EL'and pins h it, carried thereby and adapted to suddenly shift the position of the cylinder, substantially as hereinbei'ore described.

3. The combination, with an electric lamp, of a pivoted armature, an electro-niagnet having two coils wound in the same direction, one of said coils being included in the lamp-circuit, the other in a normally-open circuit around the lamp, and circuit-connections to and from said armature, which complete the circuit around the lamp when the armature is retracted from the magnet, as and for the purpose set forth.

In testimony whereof I have hereunto set my hand this 5th day of June, 1882.

EDWARD WESTON.

Witnesses:

W. FRISBY, RAYMOND F. BARNES. 

